Loom.



s. s. JACKSON.

' LOOM.

APPLICATION FILED AUG. 28, 1909. 1 ,079,9 1 4.

. Patented N0v.25,1913.

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COLUMBIA PLANDGRAPH co,. WASHINGTON. D.' c.

S. S. JACKSON.

LOOM.

APPLIUATIQN FILED Amma. 1909.

1,079,914. l v Patented Nov.25,1913.

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COLUMBIA PLANOGRAPH co., WASHINGTON. D. c.

unirti) sTATns PATENT ornrcii.

sIMEoN sCHooN JACKSON, oF READVILLR, ivIAssAHsETTs, iss ,dNoit To Tril@STAFFORD COMPANY, or READVILLE, MASSACHUSETTS, A CORPORATION or NEW'JERSEY.

T 0 all whom t may concern.'

Be it known that I, SIMEON SoHooN JACK- SON, a subject of Great Britain,residing at Readville, in the county of Norfolk, State of Massachusetts,have invented a certain new and useful Improvement in Looms, of whichthe following is a specification, reference being had therein to theaccompanying drawings. l

Certain looms in use at the present time are equipped with devices whichinclude a dog that is connected to a weft-fork slide so as to beactuated when such slide is moved in consequence of breakage or failureof the weft, and a transmitting member that is provided with a shoulderto be engaged by the dog and also with a lip which fixes the normalposition of the dog and assists in controlling the action of the dogwhen the latter is called into play. The movement of the transmittingmember produced by engagement of the dog with the said shoulder, andadvance of the dog, is for the purpose of bringing about a change in theaction o-f the loom, and has been utilized to bring about areplenishment of the working weft-supply of a loom, and the devices havebeen constructed and combined to effect pick-finding, that is to say, tocause the first pick of the fresh weft to be laid in a reopening of theproper shed to avoid a break in the weave of the web being produced.Sometimes when the weft-thread breaks it does so outside the shuttle soas to leave a trailing end which is not long enough to eX- tend in frontof the weft-fork when the shuttle is at rest in the adjacentshuttle-box. Consequently, the weft-fork is not tilted when the lay neXtbeats up. Sometimes the weft extending through a shed in the warps tothe shuttle in the shuttle-box at the end of its flight is intact but istoo slack to tilt the weft-fork. In either case the weft-hammer engagesthe tail of the weft-fork and acts in usual manner to advance theweft-fork slide and the dog so as to move the latter from its normalposition relative to the lip, the dog thereupon assuming its secondaryposition, thus beginning the sequence of the pick-finding action. If,however, in the case first referred to the trailing end should catchamong the warp-threads in the flight of the shuttle through the nextshed, or through the suc- Specification of Letters Patent.

Application led August 28, 1909.

LOOM.

Patented Nov. 25, `1913. serial No. 515,046.

ceeding shed, and become woven in, as happens occasionally, the weftwould thereafter act to tilt theiweft-fork in regular manner, as thoughthe breakage'had not occurred. Then this occurs the operation of thedevices is interrupted, and while the loom continues the weaving the dogremains in its secondary position. The result will be similar if in theother case referred to the weft laidby the succeeding pick to theweft-detecting side of the loom should tilt the weft fork. Hereto-forewhen the operation has been thus interrupted it has been necessary toreturn the dog by hand to its normal starting position in order thatwhen the next weft-failure occurs the devices may act correctly and whenemployed for pick-finding pirposes may operate to lind the proper s ed.

The invention has for its object to provide means for automaticallyreplacing the dog in its normal starting position whenever it is given adifferent position and is left therein, as in consequence of aninterruption of the regular working of the devices with which the dog iscombined, after such working has been begun, or in case of the dog beingaccidentally disturbed from such position.

The invention consists, essentially,` in the combination with atransmitting member, a dog, and a lip and a shoulder with which the dogcoacts, and a weft-detector under control of which the interaction ofdog, lip, and shoulder occurs, of means acting to restore the dog andlip to normal starting relation in case a sequence of beats that hasbeen begun is interrupted, or in case 0f accidental departure from suchrelation.

The mechanical devices employed in carrying the invention into effectmay be varied in construction and arrangement in practice.

A convenient embodiment of the invention is shown in the accompanyingdrawings, in which latten- Figurel is a side elevation taken at one endof the breast-beam of a loom, namely at the driving side of the loom,showing certain elements of pick-finder devices with the said embodimentof the invention combined therewith. Fig. 2 is a plan view of the partswhich are shown in Fig. 1. Fig. 3 is a View similar to Fig. 1, butshowing the parts' arranged for finding. the pick in the case of theemployment of a different number of harness-changes to the round thanthat for which the parts are arranged in Fig. 1. Fig. 4 is a frontelevation of the dog and dog-carrier, Fig. 5 is a side elevationthereof, and Fig. 6 is a top View thereof. Fig. 7 is a side elevation ofthe guide-stand for the striker-pin, hereinafter described, and Fig. 8is a rear elevation thereof.

1, Figs. 1, Z-and v3, is the side-frame at the driving-side of` a loom,and 2 is the breastbeam- 3 is a shipper-handle, 4 is a rockshaft onwhich the shipper-handle is iixed, and 5 a rod (only a portion thereofbeing shown) thro-ugh ywhich the shipper-handle controls thepower-shipping and brake-devices (not shown). The shipper-handle isshown in the vposit-ion occupied by it while the power is applied andthe loom is running.

At 11 is a tripping rockshaft through which the shipper-devices andweft-replenishing instrumentalities of the loom are tripped into action.For thus tripping the shipper-devices, the said tripping rockshaft hasthereon a collar 13a which is made fast thereto by a clamp-screw 13b andformed with la projecting lug or shoulder 13, and the shipper-handle isformed with a projecting lug or shoulder 14 with which lug or shoulder13 engages. By reason of such engagement, forward turning movement ofthe tripping rockshaft acts through the lugs or shoulders 13, 14, tooperate the shipper-handle so as'to cause the driving-power of the loomto be unshipped, the brake applied, and the weaving action stopped toafford opportunity for conveniently effecting replenishment.

At 12, Figs. l and 3, is a portion of a iinger that is iixed upon thetripping rockshaft by means of its hub or sleeve 12a, Fig. 2, and aclamping screw 12b. This finger is operatively combined in practice withdevices (not shown) for automatically replenishing the workingweft-supply, so that when the tripping roclrshaft and finger are turnedthe said devices are called into action and thereby the automaticreplenishment is brought about. The particular arrangement of parts thatis shown in the drawings is more especially designed for employment inaV replenishing loom of the well-known type in which the movement offinger 19A operates to trip a so-called change-shaft into operation, atthe same time that lug 13 trips the Shipper-handle to unship thedriving-power from the weaving instrumentalities and apply the brake tothereby suspend the weaving action, the change-shaft during its rotationactuating the various replenishing instrumentalities to occasion areplenishment of the'worlring weft-supply during the suspension of theweaving action, and

iinally acting to restore the shipper-handle to its former position andthereby relieving the brake-action and shipping on the driving-power toresume weaving, the changeshaft itself coming to rest. The side of theloom represented in Figs. 1, 2, and 3, being that at which theshipper-handle 3 is located, is the driving side. The magazine (notshown) containing the reserve weftsupply (filled and threaded shuttles)is in practice located at the opposite side of the loom.

The drawings show the invention applied in connection with certain ofthe elements of the pick-finder devices of a two weftfork loom, suchelements being those which are located at the driving side of the loom,although the invention is not necessarily restricted to employment inthis particular connection, nor is it limited with respect to theemployment of weft-forks as the weftdetectors.

Referring brieiy to the illustrated weftdetector and pick-finderdevices,-15 is the weft-fork which detects for picks to the driving sideof the loom, it being mounted pivotally upon the rear end of itscarrying slide 1G, and the latter being supported and guided by thestand 17 fixed upon the breastbeam 2 adjacent to the said side.

18 is the actuator (weft-hammer or gooseneck) that cooperates with thesaid fork 15, the said actuator having the shoulder 1S*1 which, when thefork 15 is not tilted by weft or filling between its t-ines and thecorresponding grid of the lay, when the lay beats up after the pick tothe driving side, engages the tail 15n of the said fork and moves theslide 1G forward in its guidestand 17. The actuator 1S is moved at therequired times to feel for the tail of the fork 15 by means of a cam(not shown) on the cam-shaft of the loom. The forward movement of theslide 16 is utilized for the actuation o-f the dog aforesaid, which isshown at 27. For the support of the dog and the transmission of movementthereto from the slide 16, an arln Q0, Fig. 2, is mounted loosely upon asupporting rod or shaft 21 extending across the loom in line with thetripping rockshaft 11. The rearwardly-extending upper end of the arm 2Ois branched, the branches being separated transversely, and in holesmade transversely through the two branches a pin 23 is mounted, the saidpin being fixed in place by means of a clamping screw 24. Theintermediate portion of the pin passes through the eye of theforwardly-projecting portion of an eye-bolt 25 having its threaded stemscrewed into the front portion of the slide 16. The said eye-boltconstitutes a longitudinally-adjustable connection between the saidslide and the pin and arm. A portion of the length of the pin 23projects at the outer side of the arm 20, and an arm 26 is hungpivotally thereon, the said arm and the slide being thereby connectedtogether so as to compel them to move forward and rearward in unison.The arm 26 extends forward from the pin, and carries the tripping dog27. When the actuator (wefthammer or gooseneck) erigages the tail of theweft-fork 15 and advances the slide 16, the arm 26 and dog 27 arecarried forward therewith. A contracting spiral spring 29, having itsrear extremity engaged with a lateral ear 29a on the rear of guide-stand17 and its forward extremity engaged with a screw 29b projectingdownward from the hub-portion of the dog-carrying arm 26, aids gravityin causing the said arm and dog to tend to swing downward, and also actswith a tendency to draw the said arm 26 and the weft-fork-carrying slide16 rearward and hold the arm 20 in contact with the front surface of thebreast-beam. Through the action of the said spring the arm 26, dog 27,and slide 16 are moved rearward into their normal positions after havingbeen advanced in the manner just described. The acting portion of thedog 27 extends transversely outward above the upper end of an arm 28rising from the hub or sleeve 12a which is fixed, as aforesaid, upon thetripping rockshaft 11. The shoulder 28a which the dog 27 is designed toengage is formed upon the upper end of the arm 28. At the rear of thesaid shoulder is a pocket 28h. The said pocket is partly covered by thelip 28, which is `constituted by a strip of metal that is fastened tothe top of the arm 28 at the rear of the pocket and projects forwardover the latter. The clearance between the front end ofthe lip and theshoulder is suflicient topermit the dog 27 t-o pass in and out beneaththe lip by relative rearward and forward movement, and the depth of thepocket at the' rear of the shoulder 28al is sufficient -to accommodatethe dog.

As thus far referred to, the parts constitute a separate invention, andare not broadly claimed herein.

Figs. 1 and 2 show the parts combined and arranged as they are employedfor pickiinding purposes .for three-harness weaving. The dog 27 occupiesa position in contact .with the under side of the lip 28C, and elevatedabove shoulder 28a. This is its normal or starting position forthree-harness work, and it is held in such position through the agencyof a link 39 having its upper end connected by a pivot 39a to thedownwardlyextending finger 26EL of arm 26 and its lower j portionslotted longitudinally at 39h, and a screw-stud 39C carried by an arm 37fixed upon the cross-rod or shaft 21. The stem of the said screw-studworks in the slot 39", and l normally engages with the wall. at theupper 1 end of such slot so as to lift and support the link and arm 26,and keep the dog 27 pressed against the under side of the lip.'

The operation, in general, of the picknder devices when arranged andcombined as in Figs. 1 and 2, is fully explained in United StatesLetters Patent No. 1,040,547, granted Oct. 8, 1912, on my co-pendingapplication filed June 10, 1908, Serial No. 501,316. It is sufficient tostate herein that should the weft fail on the pick of the shuttle fromthe magazine side of the loom to the driving side thereof, or should theweft laid lon such pick be excessively slack, so that the weft-fork 15remains untilted when the lay beats up, the engagementof the actuator 18with the tail of the said fork, and resulting advance of slide 16 andarm 26, will move dog 27 forward out from underlthe lip 28C. rlhen, asthe actuator moves rearward, the slide and arm will acT company it, andthe dog having been raised slightly through theaction of a spring (notshown) in connection with the devices (not shown) at the other side ofthe loom, the lifting force transmitted from such spring Ibeingsufficient to overcome the depressing force exerted by the spring 29,the rearward movement will place the dog above the lip 28C. It beingassumed that no weft is laid 95 it having been relieved from the liftingeffect of the spring at the other side of the loom, drops until dog 27rests upon the forward portion of arm 28, and when the slide 16 nextmoves rearward the dog falls behind shoulder 28a. .In the next advanceof the said slide, the dog 27 acts against the shoulder to move the arm28 forward, rocking the tripping roekshaft 11 so as to trip theshipper-handle and also call the replenishing instrumentalities intoaction. If failure o-f the weft at a pick from the magazine-side of theloom to the driving-side should be due to breakage thereof outside theshuttle, leaving a trailing end which is not long enough to act to tiltthe weft-fork 15 when the lay beats up with the shuttle in theshuttle-box at the latter side, so that the weft-fork devices act asdescribed to produce the first advance of the dog and cause the latterto assume its secondary position, namely, on the top of the lip, and ifin the flight of the shuttle through the next shed, from thedriving-side of the loom to the magazineside, or in the return flightfrom the magazine-side to the driving-side through the succeeding shed,the trailing end should catch in the shed and become woven in, the weftwould thereafter act in usual manner to tilt the weft-forks alternately.Thereby the operation of the pick-finding devices would be interrupted,and the regular working of the loom would be continued withoutsuspension of the weaving action, or replenishment, the dog howeverremaining in its said secondary position. When this occurs, it isimportant that the dog should be restoredv to its normal startingposition promptly, in order that the pick-finder devices may securecorrect results when subsequently called into action again. rIhe same vsituation would present itself in case the weft laid by the pick fromthe magazineside to the driving-side should be too slack to tilt theforkat the latter side, but should act to tilt the fork at the magazine-sideon the return pick to the latter side from the driving-side.

Fig. 3 shows the pick-finder devices combined and arranged as they areemployed for four-harness weaving. In this figure, link 39 andscrew-stud 39C are omitted, inasmuch as the dog is notunder contro-l ofthe weft-fork at the magazine-side. The normal or starting position oft-he dog is upon the top-of the lip. When the pick-finding sequence isbegun, so as to cause the dog to be carried forward from the lip andpermit it to drop and pass rearward under the lip, and then suchsequence is interrupted, as in either of the cases above referred to,leaving the dog in its secondary position beneath the lip, the samenecessity for replacement of the dog in its normal starting positionexists as in the case already described with reference to Figs. 1 and 2.

The means illustrated in the drawings for restoring the dog and lip tonormal starting relation in case a sequence o-f beats that has beenbegun is interrupted, leaving the dog and lip in abnormal relation,comprises a reciprocating` member which by engagement with the dog whenthe latter has been allowed to remain in its secondary position returnsit to the normal or starting position. In the illustrated embodiment ofthe invention this member is, for convenience, actuated by means of theweft-hammer or gooseneck 18, the arrangement and timing of the latterbeing well suited to the requirements 'and consists, essentially, of apush-pin, a, which is connected to the head of the wefthanimer so as tomove forward and backward in unison therewith, and is arranged to engagewith the arm 26 at one side of the pivotal aXis of the latter. When suchengagement takes place, the tendency is to turn said arm around the saidaxis. For

the purpose of such engagement the arm 26 1s shown formed with upper andlower lwings- I), b, which are shown best by Figs.

4, 5 and 6. The push-pin is held in proper position for action inconnection with one or the other of such wings by being placed withinone or the other of the holes c, c', Figs. 7 and 8, which are providedin a stand d, and by means of such stand it is guided as it isreciprocated endwise. In Figs. 1 and 2 the normal or starting positionof the dog being below the lip, the abnormal or secondary position isabove the lip. Consequently, the push-pin is caused to occupy the upperhole, c, of the stand (Z, to act against the upper wing of the arm 26,so asby pressing against the said upper wine to transfer the dog fromthe upper side of? the lip to the lower side thereof. In Fig. 3, thenormal or starting position of the dog being 85 above the lip, theabnormal or secondary position is below the same, and consequently thepush-pin occupies the lower hole 0, of the guide-stand d, so that bypressing against the lower wing of the arm 26 the said push-pin mayoperate to move the arm to transfer the dog from the lower side of thelip to the upper side thereof. The pushpin a is, for convenience,connected with the head of the weft-hammer by means of a connector e,the latter consisting` of an L shaped piece, to one arm of which thepushpin is attached, the other arm thereof being engaged with the stemof a pivotal screw f, which is applied to the said head. To provide forlengthwise adjustment of the push-pin, so as to enable its action uponthe arm 26 to be varied as required, the pushpin isk screw-threaded atthe end thereof which is engaged with the connector. This end is placedin a hole in the outstanding arm of the connector, and receives upon itat opposite sides of such arm nuts and washers e, e. By'turning'the nutsthe de-l sired adjustment may be effected.

In operation, each time the weft-hammer 18 beats forward it produces a.forward stroke of the push-pin a. If weft-fork 15 is tilted by the weft,as ordinarily will be the ease, so that the tail 15a thereof is uplifted115 and consequently missed by the shoulder 18L of the weft-hammer, theslide 16 and arm 26 will remain at. rest. As the push-pin completes itssaid stroke its forward end will encounter the wing b, or b', with whichit is 120 arranged to coact, in case the arm 26 and dog 27 occupy theirsecondary position, and will act to swing the arm so as to effect thetransfer of the dog to the normal or starting position. In case theweft-fork remains 125 untilted because of weft-absence, or undueslackness of they weft, so that the shoulder of the weft-hammer engages4the tail of the weft-fork and causes the slide 16 to advance, the arm26 will also be advanced in unison 130 with the push-pin so that thelatter Will have no effect in transferring the dog. Consequently, theaction of the dog and other parts will take place as heretofore,unmodified by the push-pin.

To facilitate the act-ion in transferring the dog from one side of thelip to the other, the arm 26 is slotted longitudinally at 26, Figs. 5and 6, for the screw 23. rlhe action of spring 29 normally holds theforward end- Wall of the slot against the stem of such screw, but whenthe pressure of the pushpin takes effect against one of the wings, Z) rr7/ as the case may be, While dog 27 is still engaged with one side oflip 28c so as to opp-ose the tendency of arm 26 to turn upon screw 23 asa pivot, the said spring yields to permit the arm 26 to move forwardrelative to slide 16 until the dog has been carried free of the lip,which leaves the arm free to turn to the slight further extent required.As the pressure of the push-pin against the Wing with which it isengaged is relieved, the arm 26 is drawn rearward again by the action ofspring 29, carrying dog 27 back with it at the proper side of the lip28C.

What is claimed is l. The combination With a transmitting member, a dog,and a lip and a shoulder with which the dog coacts, such coactioninvolving a shiftl of the dog from one side of the lip to the other, anda weft-detector under control of which the interaction of dog, lip, andshoulder occurs, of means acting to restore the dog to the original sideof the lip in case a sequence of beats that has been begun isinterrupted.

2. The combination With a transmitting member, a dog, and a lip and ashoulder With which the dog coacts, such coaction involving a shift ofthe dog from one side of the lip to the other, and a weft-detector undercontrol of which the interaction of dog, lip, and shoulder occurs, of areciprocating member Which restores the dog to the original side of thelip in case a sequence of beats that has been begun is interrupted.

3. The combination With a transmitting member, a dog, and a lip and ashoulder With which the dog coacts, such coaction involving a shift ofthe dog from one side of the lip to the other, a weft-fork under controlof which the interact-ion of dog, lip, and shoulder occurs, and aweft-hammer, of means through which the weft-hammer restores the dog tothe original side o-f the lip in case a sequence of beats due toengagement of the weft-hammer with the weft-fork is begun and leftuncompleted.

4. The combination with a weft-detector, a dog operated under thecontrol of the weftdetector, and a transmitting member having a shoulderadapted to be engaged by the dog and a lip Which controls the action ofthe dog, the operation of the parts involving a shift of the dog fromone side of the lip to the other, of means for restoring the dog to theoriginal side of the lip in case of uncompleted operation of the dogleaving it at the other side thereof.

5. The combination With a weft-detector, a transmitting member having ashoulder and a lip, and a dog to engage the said shoulder to move thesaid member, the said dog being operated under the control of theweft-detector, also governed in its action by the lip, and having anormal starting position at one side of the lip, of means to return thedog to the said side in case of uncompleted operation of the dog leavingit atV vside of Which the dog is set for its starting position, of meansto return the dog to the said starting position in case uncompletedoperation of the dog leaves it at the other side of the lip.

7 The combination with a weft-detector, a transmitting member having ashoulder and a lip, and a dog to engage the said shoulder to move thesaid member, operated under the control of the weft-detector, alsogoverned in its action by the lip, and which is adapted to have at willa normal starting position at either side of the lip according to theresults to be attained in action, of means to return the dog to theselected normal position in case of uncompleted operation of the dogleaving it in a different position, manually controlled to conform tothe variation in the said starting position of the dog.

8. The combination With a transmitting member having a shoulder and lip,a weftdetector, a movable carrier therefor, and a dog to engage the saidshoulder to move the said member, the said dog being governed as to itsaction by the said lip, movably connected to the said carrier, andadapted to be set at Will in a starting position at either side of thelip according to the results to be attained in action, of means throughWhich the weft-hammer restores the dog to the selected side of the lipin case the sequence of beats of the dog is begun and left uncompleted,manually cont-rolled to conform to the variationl in the said startingposition of the dog.

9. The combination with a transmitting member having a lip, aWeft-detector, a Inovable carrier for said weftdetector, a Wefthammer, adog pivoted upon the said carrier, governed as to its actuation of thesaid member by the said lip, and adapted to be set at Will in a startingposition at either side ofthe lip, according to the results del sired inoperation, of replacing means operated'by the weft-hammer, adjustable toact at either side of the pivot of the dog, as required to restore thedog to predetermined starting position.

10. The combination with a transmitting member, a dog, and a lip and ashoulder with Which the dog coacts, such co-action including a shift ofthe dog from one side of the lip to the other, a weft-fork under controlof Which the interaction of dog7 lip, and

shoulder takes place, and a weft-hammer, of a replacer moving in unisonWith the wefthamnier and by which the dog is restored to the originalside of the lip in case a sequence of beats that has been begun isinterrupted.

In testimony whereof I aiix my signature in presence of two Witnesses.

SIMEON SCHOON JACKSON.

Witnesses:

CHAS. F. RANDALL, EDITH J. ANDERSON.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

` Washington, D. C.

